Happy Holidays Card 2019: A Knight to Remember
December is drawing near, the Gilded Geese are getting fat, and decorations are starting to appear in shop windows. We all know what this means: WotC is releasing another Happy Holidays promo card. Image Source: Wizards of the Coast This year's contender is bringing the winds of change, swapping out your entire current library for a new deck of your choice! While these sorts of effects are not normally allowed in UnCommander because of the Commander rules, if you agree to allow his effect…